- OsInterface is now a part of execution environment
- it is created when getDevice is being called
- move ownership of wddm from Wddm Memory manager to OSInterface
- reuse osInterface on Linux in Command Stream Receiver
- currently OsInterface is not reused upon command stream receiver creation
on Windows this will change in further commits.
- make enumAdapters non static function
Change-Id: I10f36c01e6729f48653e3b5c11cbc32e811ce754